DE102011015886A1 - Method for manufacturing magnetic encoder ring, involves manufacturing carrier ring and applying encoder track on carrier ring, where encoder track is made from magnetic material - Google Patents
Method for manufacturing magnetic encoder ring, involves manufacturing carrier ring and applying encoder track on carrier ring, where encoder track is made from magnetic material Download PDFInfo
- Publication number
- DE102011015886A1 DE102011015886A1 DE102011015886A DE102011015886A DE102011015886A1 DE 102011015886 A1 DE102011015886 A1 DE 102011015886A1 DE 102011015886 A DE102011015886 A DE 102011015886A DE 102011015886 A DE102011015886 A DE 102011015886A DE 102011015886 A1 DE102011015886 A1 DE 102011015886A1
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- Germany
- Prior art keywords
- ring
- carrier ring
- encoder
- magnetic
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/80—Manufacturing details of magnetic targets for magnetic encoders
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Technisches GebietTechnical area
Die Erfindung betrifft Verfahren zur Herstellung eines magnetischen Encoderrings, bei welchem zunächst ein Trägerring gefertigt und sodann auf den Trägerring eine ein magnetisches Material umfassende Encoderspur aufgebracht wird.The invention relates to a method for producing a magnetic encoder ring, in which first a carrier ring is manufactured and then an encoder track comprising a magnetic material is applied to the carrier ring.
Magnetische Encoderringe sind bekannt und insbesondere in der Patentliteratur vielfach beschrieben. Sie werden in der Regel zur Erfassung der Drehzahl oder der Winkellage von rotierenden Maschinenteilen eingesetzt. Die vom Encoderring abgegriffenen Signale können zur Motorsteuerung, beispielsweise zur Steuerung von Einspritz- oder Zündimpulsen herangezogen werden, oder z. B. zur Erkennung der Drehzahl in Getrieben oder an Rädern zur Steuerung von Fahrsicherheitssystemen. Diese Art Encoderringe haben in der Regel einen Trägerring aus einem metallischen Werkstoff, auf dem eine magnetische Encoderspur befestigt ist. Die Encoderspur ist üblicherweise abwechselnd mit Südpolen und Nordpolen versehen. Die Encoderspur selbst wird häufig aus einem thermoplastischen oder einem Kautschuk-Material als Trägermatrix und darin eingebettetem magnetisierbarem Material, beispielsweise SrFeO – oder magnetisches Selten-Erd-Pulver, gebildet.Magnetic encoder rings are known and often described in particular in the patent literature. They are usually used to detect the speed or the angular position of rotating machine parts. The tapped from the encoder ring signals can be used for engine control, for example, to control injection or ignition pulses, or z. B. for detecting the speed in gears or wheels for controlling driving safety systems. This type of encoder rings usually have a carrier ring made of a metallic material, on which a magnetic encoder track is attached. The encoder track is usually provided alternately with southern Poland and northern Poland. The encoder track itself is often formed from a thermoplastic or a rubber material as a carrier matrix and magnetizable material embedded therein, for example, SrFeO or magnetic rare earth powder.
Der Trägerring wird in der Regel mittels einer Presse aus einem Stahl-Coil ausgestanzt. Dieses Verfahren ist aufwendig, da nach dem Stanzen in einem aufwendigen Prozess Ziehöle, die zum Stanzen benötigt werden, wieder entfernt werden müssen. Nachteilig sind weiterhin die großen Abfallmengen, die beim Stanzen entstehen.The carrier ring is usually punched out by means of a press from a steel coil. This process is complicated, since after stamping in a complex process, drawing oils, which are required for punching, have to be removed again. Another disadvantage is the large amounts of waste that arise during punching.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, das Verfahren zur Herstellung eines Encoderrings so weiterzuentwickeln, das es einfacher, kostengünstiger und umweltschonend durchzuführen ist.The invention has for its object to further develop the method for producing an encoder ring so that it is easier, cheaper and environmentally friendly to perform.
Diese Aufgabe wird mit einem Verfahren gemäß Patentanspruch 1 gelöst. Vorteilhafte Ausführunsformen der Erfindung werden in den Unteransprüchen beschrieben.This object is achieved by a method according to
Ausführung der ErfindungEmbodiment of the invention
Das erfindungsgemäße Verfahren zur Herstellung eines magnetischen Encoderrings, bei welchem zunächst ein Trägerring gefertigt und auf den Trägerring eine ein magnetisches Material umfassende Encoderspur aufgebracht wird, sieht vor, dass der Trägerring aus einem Streifen aus einem Bandmaterial, insbesondere aus Blech, gefertigt wird, wobei der Streifen zu einem Ring gebogen wird, so dass beide Enden des Streifens einander berühren, und die einander berührenden Enden sodann form- und/oder stoffschlüssig miteinander verbunden werden.The method according to the invention for producing a magnetic encoder ring, in which a carrier ring is first manufactured and an encoder track comprising a magnetic material is applied to the carrier ring, provides that the carrier ring is produced from a strip made of a strip material, in particular of sheet metal, wherein the Strip is bent into a ring, so that both ends of the strip touch each other, and then the mutually contacting ends are then positively and / or cohesively connected to each other.
Ein Verfahren, wie das oben beschriebene, zur Herstellung eines Trägerrings aus einem Bandmaterial ist an sich bekannt, z. B. aus der
Vorteilhafterweise wird der Trägerring, wie auch in der
Für Anwendungen im Automobilbereich wird als Bandmaterial in der Regel ein Blech, bei kontinuierlicher Verfahrensführung insbesondere eine Endlos-Blech verwendet.For applications in the automotive sector is usually used as a strip material sheet metal, in continuous process control in particular an endless sheet.
Bevorzugt erfolgt das Abtrennen mittels eines Lasertrennverfahrens. Damit lassen sich, wie in der
Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung erfolgt die Verbindung der zwei Kanten zur Herstellung des geschlossenen Rings ebenfalls mittels eines Laserverfahrens. Durch den hohen Energieeintrag auf einer geringen Querschnittsfläche wird nur eine kleine Menge an Material aufgeschmolzen. Es erfolgt nur eine geringe Gefügeänderung.According to a further preferred embodiment of the invention, the connection of the two edges for the production of the closed ring also takes place by means of a laser process. By the high energy input on a small cross-sectional area, only a small amount of material is melted. There is only a small structural change.
Vorzugsweise werden ein Lasertrenn- und ein Laserschweißverfahren in Kombination eingesetzt. Die Verfahrenskosten lassen sich dabei noch reduzieren, wenn beide Verfahrensschritte mit nur einer Laservorrichtung durchgeführt werden. Über eine entsprechende veränderliche Optik kann das Laserlicht dabei jeweils an den Trenn- bzw. Schweißprozess angepasst werden. Eine zweite Laserlichtquelle ist nicht erforderlich.Preferably, a laser separation and a laser welding process are used in combination. The process costs can be further reduced if both process steps are carried out with only one laser device. By means of a corresponding variable optic, the laser light can be adapted to the separation or welding process. A second laser light source is not required.
Dadurch, dass der Trägerring aus einem Bandmaterial hergestellt wird, entstehen keine Abfälle an Ringmaterial. Der Materialverbrauch ist gegenüber dem Stanzverfahren ganz erheblich reduziert. Weiterhin werden keine Ziehöle benötigt, die wieder aufwenig entfernt und entsorgt werden müssten. Das erfindungsgemäße Verfahren ist somit Ressourcen- und Umweltschonend.The fact that the carrier ring is made of a strip material, no waste of ring material. The material consumption is considerably reduced compared to the stamping process. Furthermore, no Ziehöle needed, which would have to be removed again and disposed of. The inventive method is thus resource and environmentally friendly.
Der oben beschriebenen Herstellung des Trägerrings können noch weitere Bearbeitungsschritte nachgeschaltet werden, z. B. eine Kalibrierung zur Verbesserung der Maßhaltigkeit oder Bearbeitungsschritte, wie z. B. Tiefziehen, zur weiteren Umformung des Rings.The production of the carrier ring described above may be followed by further processing steps, for. B. a calibration to improve the dimensional accuracy or processing steps, such. B. deep drawing, to further reshape the ring.
Die Encoderspur wird vorzugsweise aus einer Matrix mit darin eingebetteten hartmagnetischen Partikeln gefertigt. Die Matrix kann beispielsweise ein thermoplastisches Polymer oder aber auch ein Elastomer umfassen.The encoder track is preferably made of a matrix with embedded therein hard magnetic particles. The matrix may comprise, for example, a thermoplastic polymer or else an elastomer.
Als hartmagnetische Partikel wird in der Regel Ferrit-Pulver eingesetzt. Es können aber auch Pulver aus magnetischen Seltenen Erden verwendet werden.As hard magnetic particles ferrite powder is usually used. However, it is also possible to use powders of magnetic rare earths.
Das Verbinden der Elastomerspur mit dem Trägerring erfolgt in an sich bekannter Weise, z. B. mittels eines Bindemittels, das in einem Sprüh- oder in einem Tauchprozess aufgebracht werden kann. Die Elastomerspur selbst kann in einem Formgebungsverfahren, wie z. B. Spritzguss oder auch Compression Moulding hergestellt werden, wobei die Verbindung zu dem Trägerring entsteht. Das Aufbringen der magnetischen Pole kann in einem weiteren Prozessschritt erfolgen, bei dem mittels geeigneter Werkzeuge magnetische Felder erzeugt werden, welche die hartmagnetischen Partikel des Encoders geeignet magnetisieren. Bei diesem Prozessschritt ist, wie bereits oben erwähnt wurde, die Umgebung einschließlich des Trägerrings von Bedeutung, weil das Umfeld mit seinen magnetischen Eigenschaften die Stärke und den Verlauf der magnetischen Feldlinien beeinflusst.The bonding of the elastomer track with the carrier ring is carried out in a conventional manner, for. Example by means of a binder which can be applied in a spray or in a dipping process. The Elastomerspur itself can in a molding process, such. B. injection molding or compression molding, wherein the compound is formed to the carrier ring. The application of the magnetic poles can be carried out in a further process step in which magnetic fields are generated by means of suitable tools, which magnetize the hard magnetic particles of the encoder suitable. In this process step, as already mentioned above, the environment including the carrier ring is important because the environment with its magnetic properties affects the strength and the course of the magnetic field lines.
Kurzbeschreibung der ZeichnungenBrief description of the drawings
Das erfindungsgemäße Verfahren wird nachfolgend anhand der Figuren näher erläutert:The method according to the invention is explained in more detail below with reference to the figures:
Die in den
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 2020541 B1 [0007, 0010] EP 2020541 B1 [0007, 0010]
- EP 1020541 B1 [0008] EP 1020541 B1 [0008]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011015886A DE102011015886A1 (en) | 2011-04-01 | 2011-04-01 | Method for manufacturing magnetic encoder ring, involves manufacturing carrier ring and applying encoder track on carrier ring, where encoder track is made from magnetic material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011015886A DE102011015886A1 (en) | 2011-04-01 | 2011-04-01 | Method for manufacturing magnetic encoder ring, involves manufacturing carrier ring and applying encoder track on carrier ring, where encoder track is made from magnetic material |
Publications (1)
Publication Number | Publication Date |
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DE102011015886A1 true DE102011015886A1 (en) | 2012-10-04 |
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ID=46845021
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Application Number | Title | Priority Date | Filing Date |
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DE102011015886A Ceased DE102011015886A1 (en) | 2011-04-01 | 2011-04-01 | Method for manufacturing magnetic encoder ring, involves manufacturing carrier ring and applying encoder track on carrier ring, where encoder track is made from magnetic material |
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DE (1) | DE102011015886A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3933347A1 (en) * | 2020-07-02 | 2022-01-05 | Baumer Hübner GmbH | Method for producing a material measure |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2921744A1 (en) * | 1978-06-05 | 1979-12-13 | Transamerica Delaval Inc | MAGNETIC SENSOR DEVICE FOR LEVEL DISPLAY OR DGL. |
DE19856493C2 (en) * | 1998-12-08 | 2002-11-07 | Freudenberg Carl Kg | Flat sensor element and sealing ring with one sensor element |
US6602571B2 (en) * | 2000-10-24 | 2003-08-05 | Uchiyama Manufacturing Corp. | Method for manufacturing magnetic encoders and magnetic encoders manufactured by using such method |
EP1503215A1 (en) * | 2003-07-26 | 2005-02-02 | Hübner Elektromaschinen AG | Support ring for a magnetic angular encoder |
EP1020541B1 (en) | 1999-01-14 | 2005-05-04 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.) | Vacuum arc evaporation source and deposition apparatus |
US20050145302A1 (en) * | 2003-12-19 | 2005-07-07 | Heinz Mutterer | Method for producing a magnetic multipole encoder |
US7508193B2 (en) * | 2004-05-27 | 2009-03-24 | Nok Corporation | Encoder |
EP2020541B1 (en) | 2007-08-01 | 2010-01-13 | Carl Freudenberg KG | Method for manufacturing a sealing ring |
DE102008037006A1 (en) * | 2008-08-08 | 2010-02-11 | Baumer Hübner GmbH | Method for manufacturing hollow cylindrical rotary value embodiment for rotary encoder by linear magnet body, involves arranging multiple alternating oriented and regular magnetic poles along longitudinal direction of magnet body |
-
2011
- 2011-04-01 DE DE102011015886A patent/DE102011015886A1/en not_active Ceased
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2921744A1 (en) * | 1978-06-05 | 1979-12-13 | Transamerica Delaval Inc | MAGNETIC SENSOR DEVICE FOR LEVEL DISPLAY OR DGL. |
DE19856493C2 (en) * | 1998-12-08 | 2002-11-07 | Freudenberg Carl Kg | Flat sensor element and sealing ring with one sensor element |
EP1020541B1 (en) | 1999-01-14 | 2005-05-04 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.) | Vacuum arc evaporation source and deposition apparatus |
US6602571B2 (en) * | 2000-10-24 | 2003-08-05 | Uchiyama Manufacturing Corp. | Method for manufacturing magnetic encoders and magnetic encoders manufactured by using such method |
EP1503215A1 (en) * | 2003-07-26 | 2005-02-02 | Hübner Elektromaschinen AG | Support ring for a magnetic angular encoder |
US20050145302A1 (en) * | 2003-12-19 | 2005-07-07 | Heinz Mutterer | Method for producing a magnetic multipole encoder |
US7508193B2 (en) * | 2004-05-27 | 2009-03-24 | Nok Corporation | Encoder |
EP2020541B1 (en) | 2007-08-01 | 2010-01-13 | Carl Freudenberg KG | Method for manufacturing a sealing ring |
DE102008037006A1 (en) * | 2008-08-08 | 2010-02-11 | Baumer Hübner GmbH | Method for manufacturing hollow cylindrical rotary value embodiment for rotary encoder by linear magnet body, involves arranging multiple alternating oriented and regular magnetic poles along longitudinal direction of magnet body |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3933347A1 (en) * | 2020-07-02 | 2022-01-05 | Baumer Hübner GmbH | Method for producing a material measure |
EP3933347B1 (en) | 2020-07-02 | 2023-06-07 | Baumer Germany GmbH & Co. KG | Method for producing a material measure |
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